Lego allows all levels of complexity. But a child can do their own thing at any level. They can built a pirate ship, for example, and then mash it up with completely different things.
What basically happens is that when a company becomes great, and I'm being a bit rude here, people think they're some kind of genius. So now we can move into all sorts of other businesses because the net bottom line is, it's because we're just geniuses. They become overconfident and expand too far.
